NOAA Office of Satellite and Product Operations


This NOAA site will no longer provide GOES-East imagery. For access to high resolution GOES-East imagery from GOES-16, please go to the site: We apologize for the inconvenience and appreciate your patience.

MODIS / Aqua Ehux Bloom Map Products

Global Ehux products illustrate the presence/absence, areal extent, and timing of blooms of the sentinel coccolithophorid species Emilliania huxleyi (a calcite producing single-celled algae) and the resulting calcite concentration. The products include 8-day composites maps of E. huxleyi bloom presence and calcite concentrations on a global basis from Aqua MODIS data at 4km resolution by using the algorithm developed by Brown and Yoder (1994).

Important Message: The generation of global MODIS/Aqua Emiliania huxleyi (Ehux) bloom and calcite concentration products had been terminated on 9 June 2014 due to lack of NOAA operational users. Only a few old Ehux bloom and calcite concentration products remain here for demonstration. Please contact with either Dr. Banghua Yan ( or Dr. Christopher W. Brown ( if you plan to use, either the MODIS/Aqua E. huxleyi bloom map or the calcite concentration product in a NOAA operational program and/or model.

8-Day Composite
Week 1
Week 2
Week 3
PeightDayCompModisAquaEhuxBloom Day 0
PeightDayCompModisAquaEhuxBloom Day 1
PeightDayCompModisAquaEhuxBloom Day 2